<template>
  <div class="home-category">
    <ul class="menu">
      <li
        class="menuli"
        v-for="(item, index) in list"
        :key="index"
        @mouseenter="liEnter(item)"
      >
        <RouterLink :to="`/category/${item.id}`">{{ item.name }}</RouterLink>
        <!-- 一级菜单有内容就显示内容 -->
        <template v-if="item.children">
          <router-link
            v-for="(sub, index) in item.children"
            :key="index"
            :to="`/category/sub/${sub.id}`"
          >
            {{ sub.name }}
          </router-link>
        </template>
        <!-- 没有内容就显示骨架框 -->
        <template v-else>
          <XtxSkeleton
            width="40px"
            height="18px"
            style="margin-right: 5px"
            bg="rgba(255,255,255,0.2)"
          />
          <XtxSkeleton width="50px" height="18px" bg="rgba(255,255,255,0.2)" />
        </template>

        <!-- 弹层 -->
        <div class="layer">
          <h4>分类推荐 <small>根据您的购买或浏览记录推荐</small></h4>
          <!-- 品牌 -->
          <ul v-if="currItem.id === 'brand'">
            <li v-for="i in brandList" :key="i.id">
              <RouterLink to="/">
                <img :src="i.picture" alt="" />
                <div class="info">
                  <p class="place">
                    <i class="iconfont icon-dingwei"></i>{{ i.place }}
                  </p>
                  <p class="name ellipsis">{{ i.name }}</p>
                  <p class="desc ellipsis-2">{{ i.desc }}</p>
                </div>
              </RouterLink>
            </li>
          </ul>

          <!-- 弹层，非品牌 -->
          <ul v-else>
            <li v-for="i in item.goods" :key="i.id">
              <RouterLink to="/">
                <img :src="i.picture" alt="" />
                <div class="info">
                  <p class="name ellipsis-2">
                    {{ i.name }}
                  </p>
                  <p class="desc ellipsis">{{ i.desc }}</p>
                  <p class="price"><i>¥</i>{{ i.price }}</p>
                </div>
              </RouterLink>
            </li>
          </ul>
        </div>
      </li>
    </ul>
  </div>
</template>

<script>
import { useStore } from "vuex";
import { computed, ref } from "vue";
import { homeBrand } from "@/api/home";
export default {
  name: "HomeCategory",
  setup() {
    const store = useStore();
    const list = computed(() => {
      const _temArr = store.state.category.list.map((item) => {
        if (item.children) {
          return {
            ...item,
            children: item.children.slice(0, 2),
          };
        } else {
          return item;
        }
      });
      return [
        ..._temArr,
        {
          name: "品牌",
          id: "brand",
          children: [{ name: "品牌推荐", id: "brand_children" }],
        },
      ];
    });

    // 移入li事件
    const currItem = ref(""); // 存储brand信息
    const brandList = ref([]); // 存储请求后的品牌信息
    async function liEnter(item) {
      currItem.value = item; // 把移入的li的信息给currItem
      // 判断id属性是否是brand 是就掉借口获取品牌数据
      if (item.id == "brand" && brandList.value.length == 0) {
        const res = await homeBrand();
        // console.log(res);
        brandList.value = res.result;
      }
    }

    return { list, liEnter, currItem, brandList };
  },
};
</script>

<style scoped lang="less">
.home-category {
  width: 250px;
  height: 500px;
  background: rgba(0, 0, 0, 0.8);
  position: relative;
  z-index: 99;
  .menu {
    li {
      &.menuli {
        padding-left: 40px;
      }
      height: 50px;
      line-height: 50px;
      &:hover {
        background: @xtxColor;
      }
      a {
        margin-right: 4px;
        color: #fff;
        &:first-child {
          font-size: 16px;
        }
      }
      .layer {
        width: 990px;
        height: 500px;
        background: rgba(255, 255, 255, 0.8);
        position: absolute;
        left: 250px;
        top: 0;
        display: none;
        padding: 0 15px;
        h4 {
          font-size: 20px;
          font-weight: normal;
          line-height: 80px;
          small {
            font-size: 16px;
            color: #666;
          }
        }
        ul {
          display: flex;
          flex-wrap: wrap;
          li {
            width: 310px;
            height: 120px;
            margin-right: 15px;
            margin-bottom: 15px;
            border: 1px solid #eee;
            border-radius: 4px;
            background: #fff;
            &:nth-child(3n) {
              margin-right: 0;
            }
            a {
              display: flex;
              width: 100%;
              height: 100%;
              align-items: center;
              padding: 10px;
              &:hover {
                background: #e3f9f4;
              }
              img {
                width: 95px;
                height: 95px;
              }
              .info {
                padding-left: 10px;
                line-height: 24px;
                width: 190px;
                .name {
                  font-size: 16px;
                  color: #666;
                }
                .desc {
                  color: #999;
                }
                .price {
                  font-size: 22px;
                  color: @priceColor;
                  i {
                    font-size: 16px;
                  }
                }
              }
            }
          }
        }
      }
      &:hover {
        .layer {
          display: block;
        }
      }
    }
  }
}
</style>
